You actully kinda lost me there. So your saying, put the switch wire for the previous gear thorugh the NC circut of the next relay? so when I energize the circut it cuts the previous... Although, I need to be able to upshift, and downshift using these buttons, I.e button 3, press button 4, then down to 3-2-1
Added after 11 minutes:
I need to be able to go 1-2-3-4, then 4-3-2-1, or in any order in between 1-2-1-2-3-2 etc etc. and have it ALWAYS shut off the previous circut. With what you just said I think I could build that, if it was only 1-2-3-4. Im not positive how I would go back down. If you or someone can explain in text, how to wire that, I could build it no problem. I'll elaborate on the circut real quick, with hopes of help (i've gotta hit the speedway tommorow) with hopes of using this new shift box...
well... on a car, the transmission shift solenoids are controlled by two +12v wires. By applying +12 to the wires, either both on, wire a on, wire b on, or both off, it shifts the 4 different gears. I want to be able to shift he gears with push buttons. Obviously I need only 1 circut on at a time, that's where im stuck. Switching the previous circut off when I turn on the next, i.e shifting from 1st to 2nd, 1st gear circut needs to shut off when I touch the button, same with downshifting. Currently I have a 3 position switch, and a regular toggle to shift the gears. The 3 postion controlls 1-2-3 and the toggle controlls OD. 1st gear is on a relay because it uses +12 to both A&B to shift, and could cause obvious problems it if wasnt seperated from the rest. Consideration must be taken that both wires will never be energised at the same time, besides when need them to be (1st gear) or the car will shift into 1st. I found that out the hard way before. It so happens 1st gear is both wires +12v. With my current toggle setup, I almost took out another car while testing. I had OD on +12v to orange wire, and slowed down, without thinking I tryed to downshift into 2nd which is +12v yellow... threw the car into 1st gear at 50... it was ugly haha. Here's a another quick rundown of what wires need to be energised to cause the shift, if anyone wants to make a schematic or even text schematic...
1st gear, 12+v orange and yellow
2nd +12v yellow
3rd both yellow and orange off
4th +12v orange